异质量子混合气体
Heteronuclear quantum gas mixtures
摘要:
这篇博士教程文章是我们在汉堡大学对异质量子气体混合物的实验的回顾。本文介绍了费米玻色混合物的基本性质,并论证了40 K和87 Rb的大量子简并混合物的实现。使用异质费什巴赫共振,我们展示了如何异质相互作用可以调谐,使我们能够诱导相分离和崩溃的大排斥和吸引力的相互作用,分别。我们在三维光晶格中实现了费米-玻色混合体作为一种新的量子多体系统,并研究了这种混合体的相干特性。结合我们对晶格和费什巴赫共振的实验,我们首次实现了超冷异质结费什巴赫分子。这些分子在3D光晶格的各个位置产生。我们讨论了寿命,结合能和射频协会的效率方面的一个普遍的模型,并给出了未来可能的发展前景。
英文摘要:
This PhD tutorial article is a review of our experiments on heteronuclear quantum gas mixtures at the University of Hamburg. We introduce basic properties of trapped Fermi-Bose mixtures and demonstrate the achievement of large quantum degenerate mixtures of 40K and 87Rb. Using heteronuclear Feshbach resonances, we show how the heteronuclear interaction can be tuned, allowing us to induce phase separation and collapse for large repulsive and attractive interactions, respectively. We realize Fermi-Bose mixtures in 3D optical lattices as a novel quantum many-body system and study coherence properties of the mixture. Combining our experiments on lattices and Feshbach resonances, we present the first realization of ultracold heteronuclear Feshbach molecules. The molecules are created at individual sites of a 3D optical lattice. We discuss lifetime, binding energy and rf association efficiency in terms of a universal model and give an outlook for possible future developments.
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